var displayWaitMessage=false;	// Display a please wait message while images are loading?
  	
   		
	var activeImage = false;
	var imageGalleryLeftPos = false;
	var imageGalleryWidth = false;
	var imageGalleryObj = false;
	var maxGalleryXPos = false;
	var slideSpeed = 0;
	var imageGalleryCaptions = new Array();
	function startSlide(e)
	{
		if(document.all)e = event;
		var id = this.id;
		//this.getElementsByTagName('IMG')[0].src = '/dsg/ico/' + this.id + '_over.gif';	
		//if(this.id=='arrow_right'){
		if(this.id=='paging_r'){
			slideSpeedMultiply = Math.floor((e.clientX - this.offsetLeft) / 5);
			slideSpeed = -1*slideSpeedMultiply;
			slideSpeed = Math.max(-10,slideSpeed);
		}else{			
			slideSpeedMultiply = 10 - Math.floor((e.clientX - this.offsetLeft) / 5);
			slideSpeed = 1*slideSpeedMultiply;
			slideSpeed = Math.min(10,slideSpeed);
			if(slideSpeed<0)slideSpeed=10;
		}
	}
	
	function releaseSlide()
	{
		slideSpeed=0;
	}
		
	function gallerySlide()
	{
		if(slideSpeed!=0){
			var leftPos = imageGalleryObj.offsetLeft;
			leftPos = leftPos/1 + slideSpeed;
			if(leftPos>maxGalleryXPos){
				leftPos = maxGalleryXPos;
				slideSpeed = 0;
				
			}
			if(leftPos<minGalleryXPos){
				leftPos = minGalleryXPos;
				slideSpeed=0;
			}
			
			imageGalleryObj.style.left = leftPos + 'px';
		}
		setTimeout('gallerySlide()',20);
		
	}
	
	function showImage()
	{
		activeImage = this;	
	}
	
	function initSlideShow()
	{
	
		
		document.getElementById('paging_l').onmousemove = startSlide;
		document.getElementById('paging_l').onmouseout = releaseSlide;
		document.getElementById('paging_r').onmousemove = startSlide;
		document.getElementById('paging_r').onmouseout = releaseSlide;
		
		imageGalleryObj = document.getElementById('theImages');
		imageGalleryLeftPos = imageGalleryObj.offsetLeft;
		imageGalleryWidth = document.getElementById('galleryContainer').offsetWidth - 80;
		maxGalleryXPos = imageGalleryObj.offsetLeft; 
		minGalleryXPos = imageGalleryWidth - document.getElementById('slideEnd').offsetLeft;
		var slideshowImages = imageGalleryObj.getElementsByTagName('IMG');
		for(var no=0;no<slideshowImages.length;no++){
			slideshowImages[no].onmouseover = showImage;
		}
		gallerySlide();
	}
	
	function getElementsByClassName(oElm, strTagName, strClassName){
	    var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName);
	    //alert ('arrElementslength ' +arrElements.length);
	    var arrReturnElements = new Array();
	    strClassName = strClassName.replace(/\-/g, "\\-");
	    var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
	    var oElement;
	    for(var i=0; i<arrElements.length; i++){
	        oElement = arrElements[i];     
	        //alert ('oElement ' +oElement); 
	        //if(oRegExp.test(oElement.className)){
	            arrReturnElements.push(oElement);
	        //}   
	    }
	    //alert (arrReturnElements);
    	return (arrReturnElements)
	}
	
	function showPreview(imagePath, imageIndex, imageCaption){
		var subImages = document.getElementById('previewPane').getElementsByTagName('IMG');
		if(subImages.length==0){
			var img = document.createElement('IMG');
			document.getElementById('previewPane').appendChild(img);
		}else img = subImages[0];
		
		//var element = document.getElementByClass('sel');
		
		//var element = getElementsByClassName(document.getElementById("galleryContainer"), "a", "sel");
		
		//if (element == ''){
			//var gImage = document.getElementById ('g_image_1');
			//gImage.className = 'sel';
		//}
		//else{
			//alert ('element' +element);
			var imageLength = getElementsByClassName(document.getElementById("galleryContainer"), "a", "");
			//alert ('lenght' +imageLength.length);
			//var gImage1 = document.getElementById ('g_image_1');
			//gImage1.className = '';
			//var gImage2 = document.getElementById ('g_image_2');
			//gImage2.className = '';
			 for(var i=1; i<imageLength.length; i++){
			 	//alert ('i ' +i);
			 	var iImage = document.getElementById ('g_image_'+i);
			 	//alert ('iImage' +iImage);
			 	iImage.className = '';
			 }
			
			var gImage = document.getElementById ('g_image_'+imageIndex);
			//alert ('gImage' +gImage);
			gImage.className = 'sel';
		//}
		
		
		//var gImage = document.getElementById ('g_image_'+imageIndex);
		//alert ('gImage' +gImage);
		//gImage.className = 'sel';
		
		//getElementsByTagNames.()
		
		
		var tmpImageCaption = document.getElementById ('Gallery_image_caption');
		tmpImageCaption.innerHTML = '<span>'+imageCaption+'</span>';
		

		img.src = imagePath;
		
	}